Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBUICK1996CENTURY SEDAN L4-2.2L VIN 4REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSCAMSHAFT POSITION SENSORTESTING AND INSPECTION
1996 Buick Century Sedan L4-2.2L VIN 4
Camshaft Position Sensor: Testing and Inspection
1996 Buick Century Sedan L4-2.2L VIN 4SECTION Testing and Inspection
SCAN TOOL TESTING
The Camshaft Position Sensor (CMP) is used to indicate camshaft position so that the Powertrain Control Module (PCM) can determine which cylinder is misfiring when misfire is present. If the PCM receives an intermittent signal from the CMP then the CMP Resync Counter will increment. In order to set a DTC, the PCM must see a minimum number of resync's within a maximum time.
The Camshaft Position Sensor (CMP) is used to indicate camshaft position so that the Powertrain Control Module (PCM) can determine which cylinder is misfiring when misfire is present. If the PCM receives an intermittent signal from the CMP then the CMP Resync Counter will increment. In order to set a DTC, the PCM must see a minimum number of resync's within a maximum time.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.